From 6523974ffbf34320636f39382c3aa5e78215d7ea Mon Sep 17 00:00:00 2001 From: cltang Date: Tue, 27 Mar 2012 13:05:01 +0000 Subject: [PATCH] 2012-03-27 Chung-Lin Tang PR target/52667 * config/sh/sh.c (find_barrier): Add equality check of last_got to avoid going above orig insn. Update comments. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@185867 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/ChangeLog | 6 ++++++ gcc/config/sh/sh.c | 8 ++++++-- 2 files changed, 12 insertions(+), 2 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e9acac3..876da25 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2012-03-27 Chung-Lin Tang + + PR target/52667 + * config/sh/sh.c (find_barrier): Add equality check of last_got + to avoid going above orig insn. Update comments. + 2012-03-27 Richard Guenther PR middle-end/52720 diff --git a/gcc/config/sh/sh.c b/gcc/config/sh/sh.c index 7141a63..68e6034 100644 --- a/gcc/config/sh/sh.c +++ b/gcc/config/sh/sh.c @@ -4751,8 +4751,12 @@ find_barrier (int num_mova, rtx mova, rtx from) /* Don't emit a constant table int the middle of global pointer setting, since that that would move the addressing base GOT into another table. We need the first mov instruction before the _GLOBAL_OFFSET_TABLE_ - in the pool anyway, so just move up the whole constant pool. */ - if (last_got) + in the pool anyway, so just move up the whole constant pool. + + However, avoid doing so when the last single GOT mov is the starting + insn itself. Going past above the start insn would create a negative + offset, causing errors. */ + if (last_got && last_got != orig) from = PREV_INSN (last_got); /* Don't insert the constant pool table at the position which -- 2.7.4